U.S. patent number 8,014,749 [Application Number 12/091,523] was granted by the patent office on 2011-09-06 for method and apparatus of transmitting preferred control channel cycle attribute in wireless communication systems.
This patent grant is currently assigned to Qualcomm, Inc.. Invention is credited to Rajat Prakash.
United States Patent |
8,014,749 |
Prakash |
September 6, 2011 |
Method and apparatus of transmitting preferred control channel
cycle attribute in wireless communication systems
Abstract
A method and apparatus for transmitting Preferred Control
Channel Cycle Attributes in a wireless communication system
comprising generating a 8 bit Length field, a 8 bit AttributeID
field, a 1 bit PreferredControlChannelCycleEnabled field, a 0 or 15
bits PreferredControlChannelCycle field, a 1 bit
PreferredQuickPageEnabled field, a 0 or 15 bits PreferredRQuickPage
field, a 1 bit PreferredPagingCarrierEnabled field, a 7 bits
PreferredPagingCarrier field and a 0 or 7 bits Reserved field,
wherein the Length field indicates the length of the complex
attribute in octets and the length of the Reserved field is such
that the attribute value is octet aligned; and transmitting the
Preferred control channel cycle attribute over an OFDM
communication link.
Inventors: |
Prakash; Rajat (La Jolla,
CA) |
Assignee: |
Qualcomm, Inc. (San Diego,
CA)
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Family
ID: |
37716007 |
Appl.
No.: |
12/091,523 |
Filed: |
October 27, 2006 |
PCT
Filed: |
October 27, 2006 |
PCT No.: |
PCT/US2006/042011 |
371(c)(1),(2),(4) Date: |
October 01, 2008 |
PCT
Pub. No.: |
WO2007/050898 |
PCT
Pub. Date: |
May 03, 2007 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20090175297 A1 |
Jul 9, 2009 |
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Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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60731126 |
Oct 27, 2005 |
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Current U.S.
Class: |
455/403;
370/310 |
Current CPC
Class: |
H04W
52/0235 (20130101); H04L 1/0026 (20130101); H04L
1/0675 (20130101); H04B 17/382 (20150115); H04L
41/0869 (20130101); H04W 24/10 (20130101); H04L
1/0028 (20130101); H04B 17/318 (20150115); H04L
1/0003 (20130101); Y02D 70/1242 (20180101); Y02D
70/162 (20180101); Y02D 30/32 (20180101); H04L
41/083 (20130101); Y02D 30/00 (20180101); H04W
88/02 (20130101); H04L 41/0803 (20130101); Y02D
70/1224 (20180101); Y02D 70/142 (20180101); Y02D
70/146 (20180101); Y02D 70/144 (20180101); H04L
27/2647 (20130101); Y02D 30/70 (20200801) |
Current International
Class: |
H04M
11/00 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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2003-7481 |
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Jan 2003 |
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KR |
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0176110 |
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Oct 2001 |
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WO |
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Primary Examiner: Vu; Huy D
Assistant Examiner: Duffy; James P
Attorney, Agent or Firm: Turocy & Watson, LLP
Parent Case Text
CLAIM OF PRIORITY UNDER 35 U.S.C. .sctn.119
The present Application for Patent claims priority to Provisional
Application Ser. No. 60/731,126, entitled "METHODS AND APPARATUS
FOR PROVIDING MOBILE BROADBAND WIRELESS LOWER MAC", filed Oct. 27,
2005, assigned to the assignee hereof, and expressly incorporated
herein by reference.
Claims
I claim:
1. A method for transmitting a preferred control channel cycle
attribute in a wireless communication system characterized in that:
generating the preferred control channel cycle attribute that
includes an 8 bit Length field, an 8 bit AttributeID field, a 1 bit
PreferredControlChannelCycleEnabled field, a 0 or 15 bits
PreferredControlChannelCycle field, a 1 bit
PreferredQuickPageEnabled field, a 0 or 15 bits PreferredRQuickPage
field, a 1 bit PreferredPagingCarrierEnabled field, a 7 bits
PreferredPagingCarrier field and a 0 or 7 bits Reserved field,
wherein the Length field indicates a length of the preferred
control channel cycle attribute in octets and the length of the
Reserved field is such that a value of the preferred control
channel cycle attribute is octet aligned; and transmitting the
preferred control channel cycle attribute over an OFDM
communication link to at least one of an access terminal or an
access point.
2. The method as claimed in claim 1, characterized in that setting
PreferredControlChannelCycleEnabled field to `1` if
PreferredControlChannelCycle field is included in the attribute,
otherwise, setting this field to `0`.
3. The method as claimed in claim 1, characterized in that, setting
PreferredQuickPageEnabled field to `1` if the PreferredRQuickPage P
field is included in the attribute; otherwise, setting this field
to `0`.
4. A non-transitory computer-readable medium including instructions
stored thereon, characterized in that: a set of instructions for
generating a preferred control channel cycle attribute that
includes an 8 bit Length field, an 8 bit AttributeID field, a 1 bit
PreferredControlChannelCycleEnabled field, a 0 or 15 bits
PreferredControlChannelCycle field, a 1 bit
PreferredQuickPageEnabled field, a 0 or 15 bits PreferredRQuickPage
field, a 1 bit PreferredPagingCarrierEnabled field, a 7 bits
PreferredPagingCarrier field and a 0 or 7 bits Reserved field,
wherein the Length field indicates a length of the preferred
control channel cycle attribute in octets and a length of the
Reserved field is such that a value of the preferred control
channel cycle attribute is octet aligned; and a set of instructions
for transmitting the preferred control channel cycle attribute over
an OFDM communication link to at least one of an access terminal or
an access point.
5. An apparatus operable in a wireless communication system, the
apparatus characterized in that: means for generating a preferred
control channel cycle attribute that includes an 8 bit Length
field, an 8 bit AttributeID field, a 1 bit
PreferredControlChannelCycleEnabled field, a 0 or 15 bits
PreferredControlChannelCycle field, a 1 bit
PreferredQuickPageEnabled field, a 0 or 15 bits PreferredRQuickPage
field, a 1 bit PreferredPagingCarrierEnabled field, a 7 bits
PreferredPagingCarrier field and a 0 or 7 bits Reserved field,
wherein the Length field indicates a length of the preferred
control channel cycle attribute in octets and the length of the
Reserved field is such that a value of the preferred control
channel cycle attribute is octet aligned; and means for
transmitting the preferred control channel cycle attribute over an
OFDM communication link to at least one of an access terminal or an
access point.
6. The apparatus as claimed in claim 5, characterized in that means
for setting PreferredControlChannelCycleEnabled field to `1` if
PreferredControlChannelCycle field is included in the attribute,
otherwise, setting this field to `0`.
7. The apparatus as claimed in claim 5, characterized in that means
for setting PreferredQuickPageEnabled field to `1` if the
PreferredRQuickPage P field is included in the attribute,
otherwise, setting this field to `0`.
Description
BACKGROUND
1. Field
The present disclosure relates generally to wireless
communications, and more particularly to methods and apparatus of
transmitting preferred control channel cycle attribute.
2. Background
Wireless communication systems have become a prevalent means by
which a majority of people worldwide have come to communicate.
Wireless communication devices have become smaller and more
powerful in order to meet consumer needs and to improve portability
and convenience. The increase in processing power in mobile devices
such as cellular telephones has lead to an increase in demands on
wireless network transmission systems. Such systems typically are
not as easily updated as the cellular devices that communicate
there over. As mobile device capabilities expand, it can be
difficult to maintain an older wireless network system in a manner
that facilitates fully exploiting new and improved wireless device
capabilities.
Wireless communication systems generally utilize different
approaches to generate transmission resources in the form of
channels. These systems may be code division multiplexing (CDM)
systems, frequency division multiplexing (FDM) systems, and time
division multiplexing (TDM) systems. One commonly utilized variant
of FDM is orthogonal frequency division multiplexing (OFDM) that
effectively partitions the overall system bandwidth into multiple
orthogonal subcarriers. These subcarriers may also be referred to
as tones, bins, and frequency channels. Each subcarrier can be
modulated with data. With time division based techniques, a each
subcarrier can comprise a portion of sequential time slices or time
slots. Each user may be provided with a one or more time slot and
subcarrier combinations for transmitting and receiving information
in a defined burst period or frame. The hopping schemes may
generally be a symbol rate hopping scheme or a block hopping
scheme.
Code division based techniques typically transmit data over a
number of frequencies available at any time in a range. In general,
data is digitized and spread over available bandwidth, wherein
multiple users can be overlaid on the channel and respective users
can be assigned a unique sequence code. Users can transmit in the
same wide-band chunk of spectrum, wherein each user's signal is
spread over the entire bandwidth by its respective unique spreading
code. This technique can provide for sharing, wherein one or more
users can concurrently transmit and receive. Such sharing can be
achieved through spread spectrum digital modulation, wherein a
user's stream of bits is encoded and spread across a very wide
channel in a pseudo-random fashion. The receiver is designed to
recognize the associated unique sequence code and undo the
randomization in order to collect the bits for a particular user in
a coherent manner.
A typical wireless communication network (e.g., employing
frequency, time, and/or code division techniques) includes one or
more base stations that provide a coverage area and one or more
mobile (e.g., wireless) terminals that can transmit and receive
data within the coverage area. A typical base station can
simultaneously transmit multiple data streams for broadcast,
multicast, and/or unicast services, wherein a data stream is a
stream of data that can be of independent reception interest to a
mobile terminal. A mobile terminal within the coverage area of that
base station can be interested in receiving one, more than one or
all the data streams transmitted from the base station. Likewise, a
mobile terminal can transmit data to the base station or another
mobile terminal. In these systems the bandwidth and other system
resources are assigned utilizing a scheduler.
The signals, signal formats, signal exchanges, methods, processes,
and techniques disclosed herein provide several advantages over
known approaches. These include, for example, reduced signaling
overhead, improved system throughput, increased signaling
flexibility, reduced information processing, reduced transmission
bandwidth, reduced bit processing, increased robustness, improved
efficiency, and reduced transmission power.
SUMMARY
The following presents a simplified summary of one or more
embodiments in order to provide a basic understanding of such
embodiments. This summary is not an extensive overview of all
contemplated embodiments, and is intended to neither identify key
or critical elements of all embodiments nor delineate the scope of
any or all embodiments. Its sole purpose is to present some
concepts of one or more embodiments in a simplified form as a
prelude to the more detailed description that is presented
later.
According to one embodiment, a method is provided for transmitting
a preferred control channel attribute in a wireless communication
system comprising a 8 bit Length field, a 8 bit AttributeID field,
a 1 bit PreferredControlChannelCycleEnabled field, a 0 or 15 bits
PreferredControlChannelCycle field, a 1 bit
PreferredQuickPageEnabled field, a 0 or 15 bits PreferredRQuickPage
field, a 1 bit PreferredPagingCarrierEnabled field, a 7 bits
PreferredPagingCarrier field and a 0 or 7 bits Reserved field,
wherein the Length field indicates the length of the complex
attribute in octets and the length of the Reserved field is such
that the attribute value is octet aligned; and transmitting the
Preferred control channel cycle attribute over an OFDM
communication link.
According to another an apparatus is provided for transmitting a
preferred control channel attribute in a wireless communication
system comprising means for generating a 8 bit Length field, a 8
bit AttributeID field, a 1 bit PreferredControlChannelCycleEnabled
field, a 0 or 15 bits PreferredControlChannelCycle field, a 1 bit
PreferredQuickPageEnabled field, a 0 or 15 bits PreferredRQuickPage
field, a 1 bit PreferredPagingCarrierEnabled field, a 7 bits
PreferredPagingCarrier field and a 0 or 7 bits Reserved field,
wherein the Length field indicates the length of the complex
attribute in octets and the length of the Reserved field is such
that the attribute value is octet aligned; and transmitting the
Preferred control channel cycle attribute over an OFDM
communication link.
According to yet another embodiments a computer readable medium for
transmitting a preferred control channel attribute in a wireless
communication system is provided having a first set of instructions
for generating a 8 bit Length field, a 8 bit AttributeID field, a 1
bit PreferredControlChannelCycleEnabled field, a 0 or 15 bits
PreferredControlChannelCycle field, a 1 bit
PreferredQuickPageEnabled field, a 0 or 15 bits PreferredRQuickPage
field, a 1 bit PreferredPagingCarrierEnabled field, a 7 bits
PreferredPagingCarrier field and a 0 or 7 bits Reserved field,
wherein the Length field indicates the length of the complex
attribute in octets and the length of the Reserved field is such
that the attribute value is octet aligned and a second set of
instructions for transmitting the Preferred control channel cycle
attribute over an OFDM communication link.
To the accomplishment of the foregoing and related ends, the one or
more embodiments comprise the features hereinafter fully described
and particularly pointed out in the claims. The following
description and the annexed drawings set forth in detail certain
illustrative embodiments of the one or more embodiments. These
embodiments are indicative, however, of but a few of the various
ways in which the principles of various embodiments may be employed
and the described embodiments are intended to include all such
embodiments and their equivalents.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 illustrates embodiments of a multiple access wireless
communication system.
FIG. 2 illustrates embodiments of a transmitter and receiver in a
multiple access wireless communication system.
FIGS. 3A and 3B illustrate embodiments of superframe structures for
a multiple access wireless communication system.
FIG. 4A illustrates a flow diagram of a process of transmitting
preferred control channel cycle attributes in wireless
communication system.
FIG. 4B illustrates a module for transmitting preferred control
channel cycle attributes in a wireless communication system.
FIG. 5A illustrates a flow diagram of a process for receiving
preferred control channel cycle attributes in a wireless
communication system.
FIG. 5B illustrates a module for receiving preferred control
channel cycle attributes in a wireless communication system.
FIG. 6 illustrates a preferred control channel cycle attribute.
DETAILED DESCRIPTION
Various embodiments are now described with reference to the
drawings, wherein like reference numerals are used to refer to like
elements throughout. In the following description, for purposes of
explanation, numerous specific details are set forth in order to
provide a thorough understanding of one or more embodiments. It may
be evident, however, that such embodiment(s) may be practiced
without these specific details. In other instances, well-known
structures and devices are shown in block diagram form in order to
facilitate describing one or more embodiments.
Referring to FIG. 1, a multiple access wireless communication
system according to one aspect is illustrated. A multiple access
wireless communication system 100 includes multiple cells, e.g.
cells 102, 104, and 106. In the aspect of FIG. 1, each cell 102,
104, and 106 may include an access point 142, 144, and 146 that
includes multiple sectors. The multiple sectors are formed by
groups of antennas of a base station each responsible for
communication with access terminals in a portion of the cell. In
cell 102, access point 142 has sectors 102a, 102b, and 102c. In
cell 104, access point 144 has sectors 104a, 104b, and 104c. In
cell 106, access point 146 has sectors 106a, 106b, and 106c.
Each cell includes several access terminals which are in
communication with one or more sectors of each access point. For
example, access terminals 132a-132d, 134d, and 136e are in
communication with base station 142, access terminals 134a-132e are
in communication with access point 144, and access terminals
136a-136e and 134c are in communication with access point 146.
Controller 130 is coupled to each of the cells 102, 104, and 106.
Controller 130 may contain one or more connections to multiple
networks, e.g. the Internet, other packet based networks, or
circuit switched voice networks that provide information to, and
from, the access terminals in communication with the cells of the
multiple access wireless communication system 100. The controller
130 includes, or is coupled with, a scheduler that schedules
transmission from and to access terminals. In other embodiments,
the scheduler may reside in each individual cell, each sector of a
cell, or a combination thereof.
As used herein, an access point may be a fixed station used for
communicating with the terminals and may also be referred to as,
and include some or all the functionality of, a base station, a
Node B, or some other terminology. An access terminal may also be
referred to as, and include some or all the functionality of, a
user equipment (UE), a wireless communication device, terminal, a
mobile station or some other terminology.
It should be noted that while FIG. 1, depicts physical sectors,
i.e. having different antenna groups for different sectors, other
approaches may be utilized. For example, utilizing multiple fixed
"beams" that each cover different areas of the cell in frequency
space may be utilized in lieu of, or in combination with physical
sectors. Such an approach is depicted and disclosed in copending
U.S. patent application Ser. No. 11/260,895, entitled "Adaptive
Sectorization In Cellular System."
Referring to FIG. 2, a block diagram of an embodiment of a
transmitter system 210 and a receiver system 250 in a MIMO system
200 is illustrated. At transmitter system 210, traffic data for a
number of data streams is provided from a data source 212 to
transmit (TX) data processor 214. In an embodiment, each data
stream is transmitted over a respective transmit antenna. TX data
processor 214 formats, codes, and interleaves the traffic data for
each data stream based on a particular coding scheme selected for
that data stream to provide coded data.
The coded data for each data stream may be multiplexed with pilot
data using OFDM, or other orthogonalization or
non-orthogonalization techniques. The pilot data is typically a
known data pattern that is processed in a known manner and may be
used at the receiver system to estimate the channel response. The
multiplexed pilot and coded data for each data stream is then
modulated (i.e., symbol mapped) based on one or more particular
modulation schemes (e.g., BPSK, QSPK, M-PSK, or M-QAM) selected for
that data stream to provide modulation symbols. The data rate,
coding, and modulation for each data stream may be determined by
instructions performed on provided by processor 230.
The modulation symbols for all data streams are then provided to a
TX processor 220, which may further process the modulation symbols
(e.g., for OFDM). TX processor 220 then provides N.sub.T modulation
symbol streams to N.sub.T transmitters (TMTR) 222a through 222t.
Each transmitter 222 receives and processes a respective symbol
stream to provide one or more analog signals, and further
conditions (e.g., amplifies, filters, and upconverts) the analog
signals to provide a modulated signal suitable for transmission
over the MIMO channel. N.sub.T modulated signals from transmitters
222a through 222t are then transmitted from N.sub.T antennas 224a
through 224t, respectively.
At receiver system 250, the transmitted modulated signals are
received by N.sub.R antennas 252a through 252r and the received
signal from each antenna 252 is provided to a respective receiver
(RCVR) 254. Each receiver 254 conditions (e.g., filters, amplifies,
and downconverts) a respective received signal, digitizes the
conditioned signal to provide samples, and further processes the
samples to provide a corresponding "received" symbol stream.
An RX data processor 260 then receives and processes the N.sub.R
received symbol streams from N.sub.R receivers 254 based on a
particular receiver processing technique to provide
N.sub.T"detected" symbol streams. The processing by RX data
processor 260 is described in further detail below. Each detected
symbol stream includes symbols that are estimates of the modulation
symbols transmitted for the corresponding data stream. RX data
processor 260 then demodulates, deinterleaves, and decodes each
detected symbol stream to recover the traffic data for the data
stream. The processing by RX data processor 218 is complementary to
that performed by TX processor 220 and TX data processor 214 at
transmitter system 210.
RX data processor 260 may be limited in the number of subcarriers
that it may simultaneously demodulate, e.g. 512 subcarriers or 5
MHz, and such a receiver should be scheduled on a single carrier.
This limitation may be a function of its FFT range, e.g. sample
rates at which the processor 260 may operate, the memory available
for FFT, or other functions available for demodulation. Further,
the greater the number of subcarriers utilized, the greater the
expense of the access terminal.
The channel response estimate generated by RX processor 260 may be
used to perform space, space/time processing at the receiver,
adjust power levels, change modulation rates or schemes, or other
actions. RX processor 260 may further estimate the
signal-to-noise-and-interference ratios (SNRs) of the detected
symbol streams, and possibly other channel characteristics, and
provides these quantities to a processor 270. RX data processor 260
or processor 270 may further derive an estimate of the "operating"
SNR for the system. Processor 270 then provides channel state
information (CSI), which may comprise various types of information
regarding the communication link and/or the received data stream.
For example, the CSI may comprise only the operating SNR. In other
embodiments, the CSI may comprise a channel quality indicator
(CQI), which may be a numerical value indicative of one or more
channel conditions. The CSI is then processed by a TX data
processor 278, modulated by a modulator 280, conditioned by
transmitters 254a through 254r, and transmitted back to transmitter
system 210.
At transmitter system 210, the modulated signals from receiver
system 250 are received by antennas 224, conditioned by receivers
222, demodulated by a demodulator 240, and processed by a RX data
processor 242 to recover the CSI reported by the receiver system.
The reported CSI is then provided to processor 230 and used to (1)
determine the data rates and coding and modulation schemes to be
used for the data streams and (2) generate various controls for TX
data processor 214 and TX processor 220. Alternatively, the CSI may
be utilized by processor 270 to determine modulation schemes and/or
coding rates for transmission, along with other information. This
may then be provided to the transmitter which uses this
information, which may be quantized, to provide later transmissions
to the receiver.
Processors 230 and 270 direct the operation at the transmitter and
receiver systems, respectively. Memories 232 and 272 provide
storage for program codes and data used by processors 230 and 270,
respectively.
At the receiver, various processing techniques may be used to
process the N.sub.R received signals to detect the N.sub.T
transmitted symbol streams. These receiver processing techniques
may be grouped into two primary categories (i) spatial and
space-time receiver processing techniques (which are also referred
to as equalization techniques); and (ii) "successive
nulling/equalization and interference cancellation" receiver
processing technique (which is also referred to as "successive
interference cancellation" or "successive cancellation" receiver
processing technique).
While FIG. 2 discusses a MIMO system, the same system may be
applied to a multi-input single-output system where multiple
transmit antennas, e.g. those on a base station, transmit one or
more symbol streams to a single antenna device, e.g. a mobile
station. Also, a single output to single input antenna system may
be utilized in the same manner as described with respect to FIG.
2.
The transmission techniques described herein may be implemented by
various means. For example, these techniques may be implemented in
hardware, firmware, software, or a combination thereof. For a
hardware implementation, the processing units at a transmitter may
be implemented within one or more application specific integrated
circuits (ASICs), digital signal processors (DSPs), digital signal
processing devices (DSPDs), programmable logic devices (PLDs),
field programmable gate arrays (FPGAs), processors, controllers,
micro-controllers, microprocessors, electronic devices, other
electronic units designed to perform the functions described
herein, or a combination thereof. The processing units at a
receiver may also be implemented within one or more ASICs, DSPs,
processors, and so on.
For a software implementation, the transmission techniques may be
implemented with modules (e.g., procedures, functions, and so on)
that perform the functions described herein. The software codes may
be stored in a memory (e.g., memory 230, 272x or 272y in FIG. 2)
and executed by a processor (e.g., processor 232, 270x or 270y).
The memory may be implemented within the processor or external to
the processor.
It should be noted that the concept of channels herein refers to
information or transmission types that may be transmitted by the
access point or access terminal. It does not require or utilize
fixed or predetermined blocks of subcarriers, time periods, or
other resources dedicated to such transmissions.
Referring to FIGS. 3A and 3B, embodiments of superframe structures
for a multiple access wireless communication system are
illustrated. FIG. 3A illustrates embodiments of superframe
structures for a frequency division duplexed (FDD) multiple access
wireless communication system, while FIG. 3B illustrates
embodiments of superframe structures for a time division duplexed
(TDD) multiple access wireless communication system. The superframe
preamble may be transmitted separately for each carrier or may span
all of the carriers of the sector.
In both FIGS. 3A and 3B, the forward link transmission is divided
into units of superframes. A superframe may consist of a superframe
preamble followed by a series of frames. In an FDD system, the
reverse link and the forward link transmission may occupy different
frequency bandwidths so that transmissions on the links do not, or
for the most part do not, overlap on any frequency subcarriers. In
a TDD system, N forward link frames and M reverse link frames
define the number of sequential forward link and reverse link
frames that may be continuously transmitted prior to allowing
transmission of the opposite type of frame. It should be noted that
the number of N and M may be vary within a given superframe or
between superframes.
In both FDD and TDD systems each superframe may comprise a
superframe preamble. In certain embodiments, the superframe
preamble includes a pilot channel that includes pilots that may be
used for channel estimation by access terminals, a broadcast
channel that includes configuration information that the access
terminal may utilize to demodulate the information contained in the
forward link frame. Further acquisition information such as timing
and other information sufficient for an access terminal to
communicate on one of the carriers and basic power control or
offset information may also be included in the superframe preamble.
In other cases, only some of the above and/or other information may
be included in this superframe preamble.
As shown in FIGS. 3A and 3B, the superframe preamble is followed by
a sequence of frames. Each frame may consist of a same or a
different number of OFDM symbols, which may constitute a number of
subcarriers that may simultaneously utilized for transmission over
some defined period. Further, each frame may operate according to a
symbol rate hopping mode, where one or more non-contiguous OFDM
symbols are assigned to a user on a forward link or reverse link,
or a block hopping mode, where users hop within a block of OFDM
symbols. The actual blocks or OFDM symbols may or may not hop
between frames.
The configuration attribute Preferred control channel cycle is part
of complex attributes and default values are defined for attribute
record definition. The access terminal and the access network
generally use the Generic Attribute Update Protocol to update
configurable attributes belonging to the Default Session Management
Protocol. FIG. 8 illustrates the fields of the Preferred control
channel cycle attribute along with their lengths and default
values. The fields of the Preferred control channel cycle attribute
as specified as follows.
The Length field indicates the length of the complex attribute in
octets. The sender will set the Length field to the length of the
complex attribute excluding the Length field. The Attribute1D field
will be set to Ox00. The PreferredControlChannelCycleEnabled field
will be set to `1` if PreferredControlChannelCycle field is
included in the Preferred control channel cycle attribute;
otherwise, the sender will set PreferredControlChannelCycleEnabled
field to `0`. If PreferredControlChannelCycleEnabled is set to `1`,
the PreferredControlChannelCycle field will specify the superframe
in which the access terminal transitions out of the Sleep State in
order to monitor the Control Channel. The
PreferredControlChannelCycle field will be omitted from the
Preferred control channel cycle attribute if the
PreferredControlChannelCycleEnabled field is set to `0`. The
PreferredQuickPageEnabled field will be set to `1` if the
PreferredRQuickPage field is included in the Preferred control
channel cycle attribute; otherwise, the PreferredQuickPageEnabled
field will be set field to `0`. If the PreferredQuickPageEnabled is
set to `1`, the PreferredRQuickPage field will be set to specify
the response of the access terminal to a QuickPage packet. The
PreferredRQuickPage field will be omitted from the Preferred
control channel cycle attribute if PreferredQuickPageEnabled is set
to `0`. The PreferredPagingCarrierEnabled field will be set to `1`
if the PreferredPagingCarrier field specifies a preferred paging
operating carrier; otherwise, the PreferredPagingCarrierEnabled
field will be set to `0`. If the PreferredPagingCarrierEnabled is
set to `1`, the PreferredPagingCarrier field will specify the
preferred paging operating carrier. The Reserved field has a length
such that the Preferred control channel cycle attribute value is
octet aligned. The value of the Reserved field will be set to
zero.
In one embodiment both access terminal and access point transmit
preferred control channel cycle attribute over a communication
link. Using communication link and based upon predetermined timing,
system conditions or other decision criteria, the access point or
the access terminal will transmit Preferred control channel cycle
attribute. The communication link may be implemented using
communication protocols/standards such as World Interoperability
for Microwave Access (WiMAX), infrared protocols such as Infrared
Data Association (IrDA), short-range wireless
protocols/technologies, Bluetooth.RTM. technology, ZigBee.RTM.
protocol, ultra wide band (UWB) protocol, home radio frequency
(HomeRF), shared wireless access protocol (SWAP), wideband
technology such as a wireless Ethernet compatibility alliance
(WECA), wireless fidelity alliance (Wi-Fi Alliance), 802.11 network
technology, public switched telephone network technology, public
heterogeneous communications network technology such as the
Internet, private wireless communications network, land mobile
radio network, code division multiple access (CDMA), wideband code
division multiple access (WCDMA), universal mobile
telecommunications system (UMTS), advanced mobile phone service
(AMPS), time division multiple access (TDMA), frequency division
multiple access (FDMA), orthogonal frequency division multiple
(OFDM), orthogonal frequency division multiple access (OFDMA),
orthogonal frequency division multiple FLASH (OFDM-FLASH), global
system for mobile communications (GSM), single carrier (1.times.)
radio transmission technology (RTT), evolution data only (EV-DO)
technology, general packet radio service (GPRS), enhanced data GSM
environment (EDGE), high speed downlink data packet access (HSPDA),
analog and digital satellite systems, and any other
technologies/protocols that may be used in at least one of a
wireless communications network and a data communications
network.
The access terminal is configured to receive and transmit the
preferred control channel cycle attribute and similarly the access
point is configured to transmit and receive the preferred control
channel cycle attribute using the communication link 406. The
Preferred control channel cycle attribute comprises a 8 bit Length
field, a 8 bit Attribute ID field, a 1 bit
PreferredControlChannelCycleEnabled field, a 0 or 15 bit
PreferredControlChannelCycle field, a 1 bit Preferred
QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage field, a
1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field.
Generally, a message data structure is used to store the Preferred
control channel cycle attribute in memory, wherein the data
structure is limited to use 8 bits to store Length field, 8 bits to
store Attribute ID field, 1 bit to store
PreferredControlChannelCycleEnabled field, 0 or 15 bits to store
PreferredControlChannelCycle field, 1 bit to store Preferred
QuickPageEnabled field, 0 or 15 bit to store PreferredRQuickPage
field, 1 bit to store PreferredPagingCarrierEnabled Filed, 7 bit to
store PreferredPagingCarrier field and 7 or 0 bit to store Reserved
fields.
The access point or access terminal generates the PreferredPaging
Attribute by setting the values for Length field, Attribute ID
field, PreferredControlChannelCycleEnabled field,
PreferredControlChannelCycle field, Preferred QuickPageEnabled
field, PreferredRQuickPage field, PreferredPagingCarrierEnabled
field, PreferredPagingCarrier Filed and Reserved fields. The Length
field defines the length of the complex attribute in octets. The
sender will set this field to the length of the complex attribute
excluding the Length field. The AttributeID will be set to 0x00.
The PreferredControlChannelCycleEnabled field will be set to `1` if
PreferredControlCycle field is included in this attribute;
otherwise the sender will set this field to `0`. If
PreferredControlChannelCycleEnabled is set to `1`, this field will
specify the superframe in which the access terminal transitions out
of the Sleep State in order to monitor the Control Channel. This
filed will be omitted if PreferredControlChannelCycleEnabled is set
to `0`. PreferredQuickPageEnabled field will be set to `1` if the
PreferredRQuickPage field is included in this attribute; otherwise,
this filed will be set to `0`. If the PreferredQuickPageEnabled is
set to `1`, PreferredRQuickPage field will be set to specify the
response of the access terminal to a QuickPage packet. This filed
will be omitted if PreferredQuickPageEnabled is set to `0`. The
length of Reserved field will be such that the attribute value is
octet aligned. This filed will be set to zero.
FIG. 4A illustrates a flow diagram of the process 400 for
transmitting Preferred control channel cycle attributes, according
to an embodiment. At 402, the sender which can be an access point
or an access terminal generates a 8 bit Length field, an 8 bit
Attribute ID field, a 1 bit PreferredControlChannelCycleEnabled
field, a 0 or 15 bit PreferredControlChannelCycle field, a 1 bit
Preferred QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage
field, a 1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field. At 404,
the sender transmits the generated signal comprising a 8 bit Length
field, an 8 bit Attribute ID field, a 1 bit
PreferredControlChannelCycleEnabled field, a 0 or 15 bit
PreferredControlChannelCycle field, a 1 bit Preferred
QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage field, a
1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field over an
OFDM communication link.
FIG. 4B illustrates a processor 450 of the process of transmitting
preferred control channel cycle attribute in a wireless network.
The processor referred to may be electronic devices and may
comprise one or more processors configured to receive the block. A
processor 452 is configured to generate a 8 bit Length field, a 8
bit Attribute ID field, a 1 bit PreferredControlChannelCycleEnabled
field, a 0 or 15 bit PreferredControlChannelCycle field, a 1 bit
Preferred QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage
field, a 1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field. A
processor 454 is configured to transmit the generated signal
comprising a 8 bit Length field, an 8 bit Attribute ID field, a 1
bit PreferredControlChannelCycleEnabled field, a 0 or 15 bit
PreferredControlChannelCycle field, a 1 bit Preferred
QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage field, a
1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field over an
OFDM communication link. The functionality of the discrete
processors 452 to 454 depicted in the figure may be combined into a
single processor 456. A memory 458 is also coupled to the processor
456.
In an embodiment, an apparatus comprises means for generating a 8
bit Length field, a 8 bit Attribute ID field, a 1 bit
PreferredControlChannelCycleEnabled field, a 0 or 15 bit
PreferredControlChannelCycle field, a 1 bit Preferred
QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage field, a
1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field at 552.
The apparatus further comprises means for transmitting the
generated signal comprising a 8 bit Length field, a 8 bit Attribute
ID field, a 1 bit PreferredControlChannelCycleEnabled field, a 0 or
15 bit PreferredControlChannelCycle field, a 1 bit Preferred
QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage field, a
1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field over an
OFDM communication link. The means described herein may comprise
one or more processors.
FIG. 5A illustrates a flow diagram of the process 500 for receiving
preferred control channel cycle attributes, according to an
embodiment. At 502, the receiver which can be an access point or an
access terminal receives a 8 bit Length field, an 8 bit Attribute
ID field, a 1 bit PreferredControlChannelCycleEnabled field, a 0 or
15 bit PreferredControlChannelCycle field, a 1 bit Preferred
QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage field, a
1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field. At 504,
the receiver processes the received signal comprising a 8 bit
Length field, an 8 bit Attribute ID field, a 1 bit
PreferredControlChannelCycleEnabled field, a 0 or 15 bit
PreferredControlChannelCycle field, a 1 bit Preferred
QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage field, a
1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field over an
OFDM communication link.
FIG. 5B illustrates a processor 550 of the process of transmitting
preferred control channel cycle attribute in a wireless network.
The processor referred to may be electronic devices and may
comprise one or more processors configured to receive the block. A
processor 552 is configured to receive a 8 bit Length field, a 8
bit Attribute ID field, a 1 bit PreferredControlChannelCycleEnabled
field, a 0 or 15 bit PreferredControlChannelCycle field, a 1 bit
Preferred QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage
field, a 1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field. A
processor 554 is configured to process the received signal
comprising a 8 bit Length field, an 8 bit Attribute ID field, a 1
bit PreferredControlChannelCycleEnabled field, a 0 or 15 bit
PreferredControlChannelCycle field, a 1 bit Preferred
QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage field, a
1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field over an
OFDM communication link. The functionality of the discrete
processors 552 to 554 depicted in the figure may be combined into a
single processor 556. A memory 558 is also coupled to the processor
556.
In an embodiment, an apparatus comprises means for receiving a 8
bit Length field, a 8 bit Attribute ID field, a 1 bit
PreferredControlChannelCycleEnabled field, a 0 or 15 bit
PreferredControlChannelCycle field, a 1 bit Preferred
QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage field, a
1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field. The
apparatus further comprises means for processing the received
signal comprising a 8 bit Length field, a 8 bit Attribute ID field,
a 1 bit PreferredControlChannelCycleEnabled field, a 0 or 15 bit
PreferredControlChannelCycle field, a 1 bit Preferred
QuickPageEnabled field, a 0 or 15 bit PreferredRQuickPage field, a
1 bit PreferredPagingCarrierEnabled field, a 7 bit
PreferredPagingCarrier field and 7 or 0 bit Reserved field over an
OFDM communication link. The means described herein may comprise
one or more processors.
Furthermore, embodiments may be implemented by hardware, software,
firmware, middleware, microcode, or any combination thereof. When
implemented in software, firmware, middleware or microcode, the
program code or code segments to perform the necessary tasks may be
stored in a machine readable medium such as a separate storage(s)
not shown. A processor may perform the necessary tasks. A code
segment may represent a procedure, a function, a subprogram, a
program, a routine, a subroutine, a module, a software package, a
class, or any combination of instructions, data structures, or
program statements. A code segment may be coupled to another code
segment or a hardware circuit by passing and/or receiving
information, data, arguments, parameters, or memory contents.
Information, arguments, parameters, data, etc. may be passed,
forwarded, or transmitted via any suitable means including memory
sharing, message passing, token passing, network transmission,
etc.
Various modifications to these embodiments will be readily apparent
to those skilled in the art, and the generic principles defined
herein may be applied to other embodiments. Thus, the description
is not intended to be limited to the embodiments shown herein but
is to be accorded the widest scope consistent with the principles
and novel features disclosed herein.
* * * * *
References